This phrase is typically used to express shock or surprise. While originally, it was generally used by people from the Greater Boston area, it has since spread across the Eastern United States - making it as far south as Central Florida.

This phrase is not to be confused with "I cannot AHAHA oh my god." While similar in use cases, "I am lowkey literally deadass dead" is used in instances where humor may or may not be present, while "I cannot AHAHA oh my god" is typically used in a comedy setting.
"Bro, me and Cassidy made out a little in the walk-in at work."

"I am lowkey literally deadass dead right now."
by deflatedwaffles March 3, 2023
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